This volume contains peer-reviewed papers from the Fourth World Landslide Forum organized by the International Consortium on Landslides (ICL), the Global Promotion Committee of the International Programme on Landslides (IPL), University of Ljubljana (UL) and Geological Survey of Slovenia in Ljubljana, Slovenia from May 29 to June 2, 2017. The complete collection of papers from the Forum is published in five full-color volumes. Thisfirst volume contains the following:

• Three forum lectures

• Background and Content of the Sendai Partnerships 2015–2025

• Contribution from the signatory organizations of the Sendai Partnerships

• International Programme on Landslides (IPL): Objects, History and List of WCoE/IPL projects

• UNESCO-KU-ICL UNITIWIN Network supporting IPL

• Landslides: Journal of International Consortium on Landslides

• International Programme on Landslides (IPL): WCoEs and IPL Projects

• Landslides and Society

Prof. Kyoji Sassa is the Founding President of the International Consortium on Landslides (ICL). He is Executive Director of ICL and the Editor-in-Chief of International Journal Landslides since its foundation in 2004.

Prof. Matjaž Mikoš is the Forum Chair of the Fourth World Landslide Forum. He is the Vice President of International Consortium on Landslides and President of the Slovenian National Platform for Disaster Risk Reduction.

Prof. Yueping Yin is the President of the International Consortium on Landslides and the Chairman of the Committee of Geo-Hazards Prevention of China, and the Chief Geologist of Geo-Hazard Emergency Technology, Ministry of Land and Resources, P.R. China.

IPL (International Programme on Landslides) is a programme of the ICL. The programme is managed by the IPL Global Promotion Committee including ICL and ICL supporting organizations, UNESCO, WMO, FAO, UNISDR, UNU, ICSU, WFEO, IUGS and IUGG. The IPL contributes to the United Nations International Strategy for Disaster Reduction and the ISDR-ICL Sendai Partnerships 2015–2025.

Influence of Post-Earthquake Rainfall on the Stability of Clay Slopes (IPL-192)

Tiwari, Binod (et al.)

Pages 429-436

Public Awareness and Education Programme for Landslide Management and Evaluation Using a Social Research Approach to Determining “Acceptable Risk” and “Tolerable Risk” in Landslide Risk Areas in Malaysia (IPL-194, IPL-207)

Rashid Ahmad, Ab (et al.)

Pages 437-447

Geotechnical Site Characterization of a Mud Eruption Disaster Area Using CPTu for Risk Assessment and Mitigation (IPL-195)

Rahardjo, Paulus P. (et al.)

Pages 449-471

Massive Landsliding in Serbia Following Cyclone Tamara in May 2014 (IPL-210)

Abolmasov, Biljana (et al.)

Pages 473-484

Landslides and Society—A Foreword

Alcántara-Ayala, Irasema

Pages 487-490

Landslide Societal Risk in Portugal in the Period 1865–2015

Pereira, Susana (et al.)

Pages 491-499

Landslide Inventory Mapping in the Fourteen Northern Provinces of Vietnam: Achievements and Difficulties

Hung, Le Quoc (et al.)

Pages 501-510

Geological Conservation Through Risk Mitigation and Public Awareness at the Siq of Petra, Jordan

Cesaro, Giorgia (et al.)

Pages 511-517

Case Histories for the Investigation of Landslide Repair and Mitigation Measures in NW Germany